Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 550 insertions, 0 deletions

diff --git a/plug-ins/common/emboss.c b/plug-ins/common/emboss.c
new file mode 100644
index 0000000..51ec60e
--- /dev/null
+++ b/plug-ins/common/emboss.c
@@ -0,0 +1,550 @@
+/**************************************************
+ * file: emboss/emboss.c
+ *
+ * Copyright (c) 1997 Eric L. Hernes (erich@rrnet.com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+
+#define PLUG_IN_PROC   "plug-in-emboss"
+#define PLUG_IN_BINARY "emboss"
+#define PLUG_IN_ROLE   "gimp-emboss"
+
+
+enum
+{
+  FUNCTION_BUMPMAP = 0,
+  FUNCTION_EMBOSS  = 1
+};
+
+typedef struct
+{
+  gdouble  azimuth;
+  gdouble  elevation;
+  gint32   depth;
+  gint32   embossp;
+} piArgs;
+
+static piArgs evals =
+{
+  30.0,    /* azimuth   */
+  45.0,    /* elevation */
+  20,      /* depth     */
+  1        /* emboss    */
+};
+
+struct embossFilter
+{
+  gdouble Lx;
+  gdouble Ly;
+  gdouble Lz;
+  gdouble Nz;
+  gdouble Nz2;
+  gdouble NzLz;
+  gdouble bg;
+} static Filter;
+
+static void     query         (void);
+static void     run           (const gchar      *name,
+                               gint              nparam,
+                               const GimpParam  *param,
+                               gint             *nretvals,
+                               GimpParam       **retvals);
+
+static void     emboss        (GimpDrawable     *drawable,
+                               GimpPreview      *preview);
+static gboolean emboss_dialog (GimpDrawable     *drawable);
+
+static void     emboss_init   (gdouble           azimuth,
+                               gdouble           elevation,
+                               gushort           width45);
+static void     emboss_row    (const guchar     *src,
+                               const guchar     *texture,
+                               guchar           *dst,
+                               guint             width,
+                               guint             bypp,
+                               gboolean          alpha);
+
+
+#define DtoR(d) ((d)*(G_PI/(gdouble)180))
+
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+  NULL,  /* init  */
+  NULL,  /* quit  */
+  query, /* query */
+  run,   /* run   */
+};
+
+MAIN ()
+
+static void
+query (void)
+{
+  static const GimpParamDef args[] =
+  {
+    { GIMP_PDB_INT32,    "run-mode",  "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }"  },
+    { GIMP_PDB_IMAGE,    "image",     "The Image"                     },
+    { GIMP_PDB_DRAWABLE, "drawable",  "The Drawable"                  },
+    { GIMP_PDB_FLOAT,    "azimuth",   "The Light Angle (degrees)"     },
+    { GIMP_PDB_FLOAT,    "elevation", "The Elevation Angle (degrees)" },
+    { GIMP_PDB_INT32,    "depth",     "The Filter Width"              },
+    { GIMP_PDB_INT32,    "emboss",    "Emboss or Bumpmap"             }
+  };
+
+  gimp_install_procedure (PLUG_IN_PROC,
+                          N_("Simulate an image created by embossing"),
+                          "Emboss or Bumpmap the given drawable, specifying "
+                          "the angle and elevation for the light source.",
+                          "Eric L. Hernes, John Schlag",
+                          "Eric L. Hernes",
+                          "1997",
+                          N_("_Emboss (legacy)..."),
+                          "RGB*",
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (args), 0,
+                          args, NULL);
+
+  gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Distorts");
+}
+
+static void
+run (const gchar      *name,
+     gint              nparam,
+     const GimpParam  *param,
+     gint             *nretvals,
+     GimpParam       **retvals)
+{
+  static GimpParam  rvals[1];
+  GimpDrawable     *drawable;
+
+  *nretvals = 1;
+  *retvals = rvals;
+
+  INIT_I18N ();
+
+  drawable = gimp_drawable_get (param[2].data.d_drawable);
+  gimp_tile_cache_ntiles (drawable->ntile_cols);
+
+
+  rvals[0].type = GIMP_PDB_STATUS;
+  rvals[0].data.d_status = GIMP_PDB_SUCCESS;
+
+  switch (param[0].data.d_int32)
+    {
+    case GIMP_RUN_INTERACTIVE:
+      gimp_get_data (PLUG_IN_PROC, &evals);
+
+      if (! emboss_dialog (drawable))
+        {
+          rvals[0].data.d_status = GIMP_PDB_CANCEL;
+        }
+      else
+        {
+          gimp_set_data (PLUG_IN_PROC, &evals, sizeof (piArgs));
+        }
+
+      break;
+
+    case GIMP_RUN_NONINTERACTIVE:
+      if (nparam != 7)
+        {
+          rvals[0].data.d_status = GIMP_PDB_CALLING_ERROR;
+          break;
+        }
+
+      evals.azimuth   = param[3].data.d_float;
+      evals.elevation = param[4].data.d_float;
+      evals.depth     = param[5].data.d_int32;
+      evals.embossp   = param[6].data.d_int32;
+
+      emboss (drawable, NULL);
+      break;
+
+    case GIMP_RUN_WITH_LAST_VALS:
+      gimp_get_data (PLUG_IN_PROC, &evals);
+      /* use this image and drawable, even with last args */
+      emboss (drawable, NULL);
+    break;
+  }
+}
+
+#define pixelScale 255.9
+
+static void
+emboss_init (gdouble azimuth,
+             gdouble elevation,
+             gushort width45)
+{
+  /*
+   * compute the light vector from the input parameters.
+   * normalize the length to pixelScale for fast shading calculation.
+   */
+  Filter.Lx = cos (azimuth) * cos (elevation) * pixelScale;
+  Filter.Ly = sin (azimuth) * cos (elevation) * pixelScale;
+  Filter.Lz = sin (elevation) * pixelScale;
+
+  /*
+   * constant z component of image surface normal - this depends on the
+   * image slope we wish to associate with an angle of 45 degrees, which
+   * depends on the width of the filter used to produce the source image.
+   */
+  Filter.Nz = (6 * 255) / width45;
+  Filter.Nz2 = Filter.Nz * Filter.Nz;
+  Filter.NzLz = Filter.Nz * Filter.Lz;
+
+  /* optimization for vertical normals: L.[0 0 1] */
+  Filter.bg = Filter.Lz;
+}
+
+
+/*
+ * ANSI C code from the article
+ * "Fast Embossing Effects on Raster Image Data"
+ * by John Schlag, jfs@kerner.com
+ * in "Graphics Gems IV", Academic Press, 1994
+ *
+ *
+ * Emboss - shade 24-bit pixels using a single distant light source.
+ * Normals are obtained by differentiating a monochrome 'bump' image.
+ * The unary case ('texture' == NULL) uses the shading result as output.
+ * The binary case multiples the optional 'texture' image by the shade.
+ * Images are in row major order with interleaved color components (rgbrgb...).
+ * E.g., component c of pixel x,y of 'dst' is dst[3*(y*width + x) + c].
+ *
+ */
+
+static void
+emboss_row (const guchar *src,
+            const guchar *texture,
+            guchar       *dst,
+            guint         width,
+            guint         bypp,
+            gboolean      alpha)
+{
+  const guchar *s[3];
+  gdouble       M[3][3];
+  gint          x, bytes;
+
+  /* mung pixels, avoiding edge pixels */
+  s[0] = src;
+  s[1] = s[0] + (width * bypp);
+  s[2] = s[1] + (width * bypp);
+  dst += bypp;
+
+  bytes = (alpha) ? bypp - 1 : bypp;
+
+  if (texture)
+    texture += (width + 1) * bypp;
+
+  for (x = 1; x < width - 1; x++)
+    {
+      gdouble a;
+      glong   Nx, Ny, NdotL;
+      gint    shade, b;
+      gint    i, j;
+
+      for (i = 0; i < 3; i++)
+        for (j = 0; j < 3; j++)
+          M[i][j] = 0.0;
+
+      for (b = 0; b < bytes; b++)
+        {
+          for (i = 0; i < 3; i++)
+            for (j = 0; j < 3; j++)
+              {
+                if (alpha)
+                  a = s[i][j * bypp + bytes] / 255.0;
+                else
+                  a = 1.0;
+
+                M[i][j] += a * s[i][j * bypp + b];
+              }
+        }
+
+      Nx = M[0][0] + M[1][0] + M[2][0] - M[0][2] - M[1][2] - M[2][2];
+      Ny = M[2][0] + M[2][1] + M[2][2] - M[0][0] - M[0][1] - M[0][2];
+
+      /* shade with distant light source */
+      if ( Nx == 0 && Ny == 0 )
+        shade = Filter.bg;
+      else if ( (NdotL = Nx * Filter.Lx + Ny * Filter.Ly + Filter.NzLz) < 0 )
+        shade = 0;
+      else
+        shade = NdotL / sqrt(Nx*Nx + Ny*Ny + Filter.Nz2);
+
+      /* do something with the shading result */
+      if (texture)
+        {
+          for (b = 0; b < bytes; b++)
+            *dst++ = (*texture++ * shade) >> 8;
+
+          if (alpha)
+            {
+              *dst++ = s[1][bypp + bytes]; /* preserve the alpha */
+              texture++;
+            }
+        }
+      else
+        {
+          for (b = 0; b < bytes; b++)
+            *dst++ = shade;
+
+          if (alpha)
+            *dst++ = s[1][bypp + bytes]; /* preserve the alpha */
+        }
+
+      for (i = 0; i < 3; i++)
+        s[i] += bypp;
+    }
+
+  if (texture)
+    texture += bypp;
+}
+
+static void
+emboss (GimpDrawable *drawable,
+        GimpPreview  *preview)
+{
+  GimpPixelRgn  src, dst;
+  gint          p_update;
+  gint          y;
+  gint          x1, y1, x2, y2;
+  gint          width, height;
+  gint          bypp, rowsize;
+  gboolean      has_alpha;
+  guchar       *srcbuf, *dstbuf;
+
+  if (preview)
+    {
+      gimp_preview_get_position (preview, &x1, &y1);
+      gimp_preview_get_size (preview, &width, &height);
+      x2 = x1 + width;
+      y2 = y1 + height;
+    }
+  else
+    {
+      if (! gimp_drawable_mask_intersect (drawable->drawable_id,
+                                          &x1, &y1, &width, &height))
+        return;
+
+      /* expand the bounds a little */
+      x1 = MAX (0, x1 - evals.depth);
+      y1 = MAX (0, y1 - evals.depth);
+      x2 = MIN (drawable->width, x1 + width + evals.depth);
+      y2 = MIN (drawable->height, y1 + height + evals.depth);
+
+      width  = x2 - x1;
+      height = y2 - y1;
+    }
+
+  bypp = drawable->bpp;
+  p_update = MAX (1, height / 20);
+  rowsize = width * bypp;
+  has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
+
+  gimp_pixel_rgn_init (&src, drawable,
+                       x1, y1, width, height,
+                       FALSE, FALSE);
+  gimp_pixel_rgn_init (&dst, drawable,
+                       x1, y1, width, height,
+                       preview == NULL, TRUE);
+
+  srcbuf = g_new0 (guchar, rowsize * 3);
+  dstbuf = g_new0 (guchar, rowsize);
+
+  emboss_init (DtoR(evals.azimuth), DtoR(evals.elevation), evals.depth);
+  if (!preview)
+    gimp_progress_init (_("Emboss"));
+
+  /* first row */
+  gimp_pixel_rgn_get_rect (&src, srcbuf, x1, y1, width, 3);
+  memcpy (srcbuf, srcbuf + rowsize, rowsize);
+  emboss_row (srcbuf, evals.embossp ? NULL : srcbuf,
+              dstbuf, width, bypp, has_alpha);
+  gimp_pixel_rgn_set_row (&dst, dstbuf, 0, 0, width);
+
+  /* middle rows */
+  for (y = 0; y < height - 2; y++)
+    {
+      if (! preview && (y % p_update == 0))
+        gimp_progress_update ((gdouble) y / (gdouble) height);
+
+      gimp_pixel_rgn_get_rect (&src, srcbuf, x1, y1 + y, width, 3);
+      emboss_row (srcbuf, evals.embossp ? NULL : srcbuf,
+                  dstbuf, width, bypp, has_alpha);
+      gimp_pixel_rgn_set_row (&dst, dstbuf, x1, y1 + y + 1, width);
+    }
+
+  /* last row */
+  gimp_pixel_rgn_get_rect (&src, srcbuf, x1, y2 - 3, width, 3);
+  memcpy (srcbuf + rowsize * 2, srcbuf + rowsize, rowsize);
+  emboss_row (srcbuf, evals.embossp ? NULL : srcbuf,
+              dstbuf, width, bypp, has_alpha);
+  gimp_pixel_rgn_set_row (&dst, dstbuf, x1, y2 - 1, width);
+
+  if (preview)
+    {
+      gimp_drawable_preview_draw_region (GIMP_DRAWABLE_PREVIEW (preview),
+                                         &dst);
+    }
+  else
+    {
+      gimp_progress_update (1.0);
+
+      gimp_drawable_flush (drawable);
+      gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
+      gimp_drawable_update (drawable->drawable_id, x1, y1, width, height);
+      gimp_displays_flush ();
+    }
+
+  g_free (srcbuf);
+  g_free (dstbuf);
+}
+
+static gboolean
+emboss_dialog (GimpDrawable *drawable)
+{
+  GtkWidget *dialog;
+  GtkWidget *main_vbox;
+  GtkWidget *preview;
+  GtkWidget *radio1;
+  GtkWidget *radio2;
+  GtkWidget *frame;
+  GtkWidget *table;
+  GtkObject *adj;
+  gboolean   run;
+
+  gimp_ui_init (PLUG_IN_BINARY, TRUE);
+
+  dialog = gimp_dialog_new (_("Emboss"), PLUG_IN_ROLE,
+                            NULL, 0,
+                            gimp_standard_help_func, PLUG_IN_PROC,
+
+                            _("_Cancel"), GTK_RESPONSE_CANCEL,
+                            _("_OK"),     GTK_RESPONSE_OK,
+
+                            NULL);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  gimp_window_set_transient (GTK_WINDOW (dialog));
+
+  main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+                      main_vbox, TRUE, TRUE, 0);
+  gtk_widget_show (main_vbox);
+
+  preview = gimp_drawable_preview_new_from_drawable_id (drawable->drawable_id);
+  gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
+  gtk_widget_show (preview);
+  g_signal_connect_swapped (preview, "invalidated",
+                            G_CALLBACK (emboss),
+                            drawable);
+
+  frame = gimp_int_radio_group_new (TRUE, _("Function"),
+                                    G_CALLBACK (gimp_radio_button_update),
+                                    &evals.embossp, evals.embossp,
+
+                                    _("_Bumpmap"), FUNCTION_BUMPMAP, &radio1,
+                                    _("_Emboss"),  FUNCTION_EMBOSS,  &radio2,
+
+                                    NULL);
+
+  gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
+  gtk_widget_show (frame);
+
+  g_signal_connect_swapped (radio1, "toggled",
+                            G_CALLBACK (gimp_preview_invalidate),
+                            preview);
+  g_signal_connect_swapped (radio2, "toggled",
+                            G_CALLBACK (gimp_preview_invalidate),
+                            preview);
+
+  table = gtk_table_new (3, 3, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+  gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
+
+  adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
+                              _("_Azimuth:"), 100, 6,
+                              evals.azimuth, 0.0, 360.0, 1.0, 10.0, 2,
+                              TRUE, 0, 0,
+                              NULL, NULL);
+  g_signal_connect (adj, "value-changed",
+                    G_CALLBACK (gimp_double_adjustment_update),
+                    &evals.azimuth);
+  g_signal_connect_swapped (adj, "value-changed",
+                            G_CALLBACK (gimp_preview_invalidate),
+                            preview);
+
+  adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
+                              _("E_levation:"), 100, 6,
+                              evals.elevation, 0.0, 180.0, 1.0, 10.0, 2,
+                              TRUE, 0, 0,
+                              NULL, NULL);
+  g_signal_connect (adj, "value-changed",
+                    G_CALLBACK (gimp_double_adjustment_update),
+                    &evals.elevation);
+  g_signal_connect_swapped (adj, "value-changed",
+                            G_CALLBACK (gimp_preview_invalidate),
+                            preview);
+
+  adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
+                              _("_Depth:"), 100, 6,
+                              evals.depth, 1.0, 100.0, 1.0, 5.0, 0,
+                              TRUE, 0, 0,
+                              NULL, NULL);
+  g_signal_connect (adj, "value-changed",
+                    G_CALLBACK (gimp_int_adjustment_update),
+                    &evals.depth);
+  g_signal_connect_swapped (adj, "value-changed",
+                            G_CALLBACK (gimp_preview_invalidate),
+                            preview);
+
+  gtk_widget_show (table);
+
+  gtk_widget_show (dialog);
+
+  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
+
+  gtk_widget_destroy (dialog);
+
+  if (run)
+    emboss (drawable, NULL);
+
+  return run;
+}